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N-1000-III/IV
N-1000-III/IV
N-1000-III/IV
N-1000-III/IV
N-1000-III/IV
4–4
4–4
4–4
4–4
4–4
Section 4: P
Section 4: P
Section 4: P
Section 4: P
Section 4: Panel L
anel L
anel L
anel L
anel Layout
ayout
ayout
ayout
ayout
4-2: Terminal Blocks 1, 2, 3, 4
(Terminal Blocks 3 and 4 are available on the N-1000-III/IV-X only)
Each DPDT relay provides control for up to two external devices. Both poles of a
given relay have a normally-closed terminal, a common terminal and a normally-
open terminal. (See Figure 4-4.) Northern recommends using the A pole of the
relays for locks (inductive loads) and the B pole for dry circuit (logic) applica-
tion.
Terminal Block 1 provides relay contacts for relays 1 and 2.
Terminal Block 2 provides relay contacts for relays 3 and 4.
Terminal Block 3 provides relay contacts for relays 5 and 6.
Terminal Block 4 provides relay contacts for relays 7 and 8.
Terminal block 1, 2, 3, 4 terminations are as follow:
Pos.
TB1
TB2
TB3
TB4
Function
1
Relay 2: A
Relay 3: A
Relay 6: A
Relay 8: A
Normally-Closed
2
Relay 2: A
Relay 3: A
Relay 6: A
Relay 8: A
Common
3
Relay 2: A
Relay 3: A
Relay 6: A
Relay 8: A
Normally-Open
4
Relay 2: B
Relay 3: B
Relay 6: B
Relay 8: B
Normally-Closed
5
Relay 2: B
Relay 3: B
Relay 6: B
Relay 8: B
Common
6
Relay 2: B
Relay 3: B
Relay 6: B
Relay 8: B
Normally-Open
7
Relay 1: A
Relay 4: A
Relay 5: A
Relay 7: A
Normally-Closed
8
Relay 1: A
Relay 4: A
Relay 5: A
Relay 7: A
Common
9
Relay 1: A
Relay 4: A
Relay 5: A
Relay 7: A
Normally-Open
10
Relay 1: B
Relay 4: B
Relay 5: B
Relay 7: B
Normally-Closed
11
Relay 1: B
Relay 4: B
Relay 5: B
Relay 7: B
Common
12
Relay 1: B
Relay 4: B
Relay 5: B
Relay 7: B
Normally-Open